jackson



@eine gratte gatmt @fitta JOEL VC. JACKSON, OF ROCHESTER, NEW YORK.

Letters Patent No. 61,340, dated January 22, 1867; antedated January 17,1867.

IMPROVEMENT IN WRENCHES.

ldllge Srlginde rifletta tu in 'tigen etirts atcnt mit mating mrt Inftige smut.

To ALL wHoM Ir MAY coNcEnN;

Be it known that I, JOEL C. JACKSON, of Rochester, in the county ofMonroe, and `State of New York, have invented and made a certain new andu'seful Improvement in Wrenches;'and I do hereby declare the followingto be a full, clear, and exact description of the said invention,reference being had to the annexed drawing, making part of thisspecification, wherein-- Figure I is a longitudinal section of theimproved wrench; and

Figure 2 is across-section at the line x :11, of fig. l.

Similar letters indicate the same parts.

A. ratchet wrench has heretofore been made with a barrel introducedwithin a ring at the end of a handle, and kept in place by the end of astop lever entering a groove around .the wrench barrel, and said barrelhas had ratchet teeth taking a separate pawl Within the stock or handle.This construction is'complicated and costly.

The nature of my said invention consists in a stop lever and pawl formedby one piece oi' metal, in combinationl with a wrench barrelhaving`ratchet teeth cut in` the bottom of a peripheral recess. By thisconstruction ,the end ofthe pawl always remaining in the peripheralrecess prevents the wrench barrel getting ont of its place within thestock while in use, but when the lever end of the pawl is depressed, soas to raise the said pawl out of the peripheral recess, the wrenchbarrel may be slid out and a different one introduced.

In the drawing, a is the handle, at the endof which is the eye or ringforming the stock b for the wrench barrel c, through which is apolygonal opening of the size and shaperequired. Around the barrel, nearthe middle thereof, is the peripheral groove o, formed with ra-tchetteeth in its bottomsurface. d is alever pawl on a centre pin, e, andacted upon by a spring, n, tokeep the end of saidpawl within theperipheral groove 0, so that said pawl may always prevent end motion tothe Wrench barrel c, except when the end z of the pawl el is pressedupon suiiiciently to raise the pawl out of said groove, and allow thebarrel e to be slid endwise out from the stock b, for the introductionof another barrel. This ratchet wrench is cheaply constructed, strong,and dura- Able, and may be employed to give a rotary movement to ascrew, a nut, or a boring tool; and the lower lever pawl d, being in arecess in the stock, is not liable to injury. 4

What I claim, and desire to secure by Letters Patent, is

The peripheral recess or groove o, in the wrench barrel c, formed withratchetl teeth in its bottom surface in combination with the stop leverpawl d within the stock b, as and for the purposes set forth.

In witness whereof` I have hereunto setl my signature this twenty-ninthday of May, A. D. 1866.

J. C. JACKSON. Witnesses:

Gao. B. SMITH, CAnLos SMITH.'

